If you shift your center-of-gravity over your front facing foot instead of splitting it evenly between your feet, you can more easily walk across icy surfaces without falling quite so much. Penguins have figured this out, as have many who live in areas covered by ice for weeks each year.

The above graphic is from Tablet Infographics, a site that has a wide variety of infographics for many occasions. Another way to avoid slipping in icy conditions is to use a commercial product such as YakTrax that attach to your shoes. Either way, take care when having to walk icy paths.